Pontederia sagittata is a species of aquatic plant belonging to the family Pontederiaceae.

Basal leaves, emerging; pods 10–27 cm, the apex emarginate; petioles up to 1 m, not inflated, sometimes reddish; Blades 8-32 x 5–19 cm, lanceolate, the base cordate, the apex acute.

Utricles 5–6 mm, deltiform, with smooth rib edges; seeds 2.3-2.5 mm, smooth, obovoid, covered by a mucilaginous layer with an oily appearance.

[1] Pontederia sagittata has a discontinuous distribution, being native from Mexico to Central America and then eastern and southern Brazil.

[1] It is found on the edges of rivers, lagoons, ponds, and swamps,[2] at altitudes of up to 1,500 m (4,900 ft).